DIPTERA. 
643 
lihiipolf onniiot; belong- to tbo samo p^onoric pronp. JTo alf=io poinia out ita 
diderence from Limnohiorhynchits (Westw.), and states that ho entertains 
doubts as to the validity of the latter, of which he cites Westwood’s 
characters. 
CtjUndrotoma (Macq.) and Triogma (Schin.) are characterized by Osten- 
Sacken, 1. c. pp. 234 & 237. The author also quotes a communication from 
Loew, stating that the species described {vide infi'o) under the name of 
Triogma nodicornis should be referred to Cylindrotomay or constitute a new 
genus. 
Loew (Wien. ent. Mon. Bd. viii. pp. 120-128) describes the cases in which 
the females of species of Tipida have the wings rudimentary, and refers in 
passing to other genera of Diptera in which analogous phenomena occur. 
The Tipidce with rudimentary wings have been formed into a distinct genus 
{Pteretachisus) by Bondani, but Loew regards this as untenable. He de- 
scribes as known European species Tipula pagana (Meig.) = T. dispar (Hal.), 
1. c. p. 125, and Tipida herteii (Rond.), 1. c. p. 128, and adds the description 
of a new species. 
Loew (/. c. p. 123) remarks that Zetterstedt describes both sexes of his 
Limnohia {Idioptera") fasciata as possessing fully developed wings, the 5 of 
the true Idiopter a fasciata having those organs rudimentary. Hence he con- 
cludes that a second nearly allied species may occur in Sweden. 
The habits and characters of Tipida cerealis are described by Taschenberg> 
Naturg. wirbell. Thiere, pp. 158-161. 
Pisia (Rond.). Rondani gives a character of this Limnohia and 
Erioptera, pp. Archivio Canestr. vol. iii. p. 91. 
New genera — 
Ctedonia, g. n., Philippi, Verh. zool.-bot. Ges. in Wien, xv. p. 602. Allied 
to Ctenophora] antennae 20-jointed, pectinated on one side in both sexes; 
terminal joint of palpi short ; wings with 5 posterior cells, second stalked. 
Sp. C. hicolor, Phil. p. 603, pi. 23. fig. 2, C. pictipennis and hipunctata, Phil, 
p. 603, and C.Jlavipennis, Phil. p. 602, from Chili. 
Polymoria, g. n., Philippi, 1. c. p. 608. Allied to Tipida ; wings with 6 
posterior cells, third pedicellate. Sp. P. irrorata, Phil. p. 608, pi. 23. fig. 8, 
P. cinerea, pimctipennisy and tenella, Phil. p. 609, from Chili. 
Idioneurtty g. n., Philippi, 1. c. p. 615. Allied to Limnohia ; wings with 
2 marginal cells, first very wide, with 3 cells at its apex, second narrow ; 
submarginal cell with a straight transverse vein ; 6 posterior cells, all sessile; 
basal cells elongate. Sp. I. macropteraj Phil. 1. c. pi. 23. fig. 4, from Chili. 
Lnchnoccra, g. n., Philippi, I c. p. 016. Anteiinao as long ns the body, of 
13 (?) joints, with long spreading hairs ; wings with two marginal cells, first 
very large, second short. Sp. L. delicatula, Phil. L c. p. 616, pi. 23. fig. 5, 
from Chili. 
TanyderuSy g. n., Philippi, 1. c. p. 780. Allied to Polymer a ; antennne of at 
least 25 joints, joint 2 about half the length of 1 ; prothorax deflexed, long, 
thin, and cylindrical ; discoidal cell long. Sp. T. pictuSy Phil. p. 781, pi. 29. 
fig. 67, from Chili. 
2 T 2 
